The mineralogy and petrography of natural graphite in Saba Boru of Ethiopia indicate that there exists flake graphite with a slightly oval structured fine size according to our study on thin and polished sections. Herein, for estimating the carbon content in graphite, the ASTM-C561, the test method for ash in a graphite sample, was used. For characterizing graphite, x-ray diffraction, x-ray fluorescence, inductively coupled plasma mass spectroscopy, and scanning electron microscopy were also used. Chemical analysis of ore samples determined that the average compositions are 63.35% SiO₂, 15.45% Al₂O₃, 2.36% Fe₂O₃, 2.07% K₂O, less than1% others, and loss-on-ignition (LOI) in the range of ~4.74%–37.42%. The total carbon content of graphitic ore ranged from 4.11% to 33.14%. Importantly, when graphite is concentrated through floatation, its average purity and recovery are 92.97% and 90.82%, respectively. Furthermore, once the graphite concentrates are treated with hydrofluoric acid, the average value attains a high grade of 96.48% C. Moreover, the average ash content is 81.93% (pre-flotation) and 3.1% (post-flotation), respectively. Finally, after beneficiation, a silica is identified as a major gangue (85.88%), usable as a raw material for other purposes such as cement. Hence, these graphite-bearing rocks seem to be worth exploring for commercialization opportunities.

埃塞俄比亚Saba Boru的天然石墨的矿物学和岩石学研究表明，根据我们对薄壁和抛光部分的研究，存在片状石墨，其结构略微呈椭圆形。这里，为了估计石墨中的碳含量，使用了ASTM-C561，一种石墨样品中灰分的测试方法。为了表征石墨，还使用了X射线衍射，X射线荧光，电感耦合等离子体质谱和扫描电子显微镜。矿石样品的化学分析确定的平均组合物是63.35％的SiO ₂，15.45％的Al ₂ ö ₃，2.36％的Fe ₂ ö ₃，2.07％K ₂O，小于1％的其他材料，点火损耗（LOI）在〜4.74％–37.42％的范围内。石墨矿石的总碳含量为4.11％至33.14％。重要的是，当通过浮选浓缩石墨时，其平均纯度和回收率分别为92.97％和90.82％。此外，用氢氟酸处理石墨精矿后，平均值达到96.48％的高品位。此外，平均灰分分别为81.93％（浮选前）和3.1％（浮选后）。最后，经过选矿后，二氧化硅被确定为主要的脉石（85.88％），可用作其他目的的原料，例如水泥。因此，这些含石墨的岩石似乎值得探索以寻求商业化机会。